Question

Explain Natural System of Classification.✌​

Answer 1

Answer:

Natural system of classification of plants is based on characters of the reproductive organs, structural relationships as well as all other important characters. It helps to ascertain the name of a plant as well as its relationships and affinities with other plants. All modern syst.ems of classificationare natural.

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Answer 2

Answer:

Depending upon the exchange of energy and matter with the environment, thermodynamic sys- tems are classified as open, closed or isolated. A system that can freely exchange energy and matter with its environment is called an open system. Example: water boiling in an open vessel. A system that can freely exchange energy but not.matter with its environment is called a closed system. Example : water boiling in a closed vessel. A system that cannot exchange energy as well as matter with its environment is called an isolated system. In practice it is impossible to realize an isolated system as every object at a temperature.above 0 K emits energy in the form of radiation, and.no object can ever attain 0 K. For many practical purposes, a thermos flask containing a liquid can be considered an isolated system.